Comment 3 for bug 682150

Just happened to me. Update Manager alerted to new urgent updates. Tried to install and failed. Then also went in to Ubuntu Software Centre to install an app and got the same message, which told me to report a bug at this site.

Details of message read
"Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 768, in simulate
    return self._simulate_helper(trans, status_path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 823, in _simulate_helper
    self._cache.open()
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 126, in open
    self._cache = apt_pkg.Cache(progress)
SystemError: E:Could not open file /tmp/future-status-USXCiN - open (2: No such file or directory), E:The package lists or status file could not be parsed or opened."